SAN FRANCISCO (CBS SF) — You remember the McDonald’s jingle — “Two all-beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.”

Well, forget the patties and just pass the sauce.

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A McDonald’s giveaway of bottles of the trademark special sauce triggered an Ebay frenzy Thursday as lucky customers put them up for auction for as much as $15,000.

The fast-food giant was giving way 10,000 free bottles as a lure to get customers to buy new versions of its Big Mac. The company is introducing the Mac Jr. and the Grand Mac, two different-sized variations of the classic sandwich.

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McDonald’s introduced the original Big Mac in 1968.

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